Casio LK-120 - Power Supply; Household Power Outlet Usage; Battery Usage and Information

LK-120
– 11 –
Undo 16 screws and then remove the M821-MDA1 PCB, rubber keys and LCD.B-4.
Rubber keys LCD
<Caution for installing M821-MDA1 PCB>
To install the M821-MDA1 PCB, tighten the screws for
the LCD part in the order shown in the right.
If not tighten correctly, it may cause the LCD display
errors.
4
3
2
1
5
6